Governor



June 16, 1931. ROBERTSON 1,810,401

GOVERNOR Filed Oct. 7, 1950 2 Sheets-Sheet 1 June 1931- r J. H. ROBERTSON 1,810,401

GOVERNOR Filed Oct. 7, 1959 2 Sheets-Sheet 2 r- \V 765 e a S ring.

fiflsexternal gear-ring c for Patented June 16, 1931 UNITED ST T S TENT caries JOHN HOGG sales erson, or ennon, ENGLAND GOVERNOR Application filed'fictober a'isso, seriai m; esasea' na a GreatBritain December, 17,1929.

This invention relatestocentrifugal gov ernors.

The invent on provlde an improved governor mechanism 5- adapted to control the. axial displacement of a slidable member, which may form the drivingdisc of a variable frictiongearing.

Another object is to'provide a positive driving connection between the governor support 10 orcasingand'the axially displaceable member, whereby the power is transmitted-to the latter independently otthemoving parts of:

the governor mechanism.

A further object is to 'utilize the available 15. "space'within the governor casing to the: best advantage so that a compact butvpowerful mechanism is provided within the dimensions.

allowed.

According to this invention, the governor vmechanism comprisesa support secured on the governor shaft, a ring mounted upon said support and'capable of rotation in relation thereto, the ring'being connected to a centralpinion meshing with the correspondfrom the support by means otsockets hav-' 'ing roller-fitted projections which engage with cam-shaped notches upon-the rotatable The invention is hereafter described with reference to the accompanying drawings, in which Figure 1 is aIhalf-elevation, partly in section, of the governor mechanism enclosed in its casing.

Figure2 is a section on the line 2'2 of Figure 1. I I r V Figure 3 is adetail of a portion of-the rotatable ring, showing one of its cam notches engaged'by the roller-fitted projection from one, of the guide sockets.

,port a consists of a cylindrical box or casing, openatthe front end, adaptedto replace the customary'flywheel upon the driving or governor shaftb, and having if desired an ing toothed sectorsof a numberof weighted" levers pivoted upon the support, and a sl1d-- the construction illustrated, the supengagement by the V pinion (not shown) of an electricstarter deo vice. has for itsmain object to rotatable ring and thebaok or endplatera ofthe support inorderto take theaxial pressure transmitted by the rollers-hto the cam notches 6 upon the ring-c.- Allocking plateiz' having teeth i to engage with serrations 7 at the lower endof the nut; f, is'fixed on the inside of the endplatea by means of screwsz.

The pinion d meshesv with toothed sectors the back plate a? of the support, therebeing, for example'four of these studs l0 andfourv ,7' integral with weighted levers j whichare I pivotally mounted uponstudsla screwedinto weighted levers j spaced at equal distances o I around the center. A'number rot-pillars m,

for example four, are also screwed into the backplatect to form guides for the axial movement of aslidable member n carrying an equal number of sockets 0 fitted with bushes 0 *for sliding move'mentalong the pillars these sockets 0 have lateral proj ections o' upon which are mounted rollersh se-.

of the rollers bearing upon the cam notches 6 upon the ringe. Thestuds 7c and pillars m may be arranged asshown at thesameradia] distance-from the center.

a cured by washersptand screws 27 the edges o The sli'dable member n, forming for exam- 7 ple the driving member of a variable friction gearing as described in my United States patent specification'No. 1,7 7 2,5 93,is also vconnected to theback plate a by springs q coiled around studs 9 screwed into the back plate the outer ends of the studs.

v The annular plate e isformed witharcuate slots to allow of its rotary movementin 1 81am ,tionto the support, combined slotse being i 1 al, the springslbeing enclosed by thimbles g I provided for the passage of the guiding pillars m and the weight pivot studs in, and separate slots 6* being provided for the passage of the guide stems or studs (7 of the spring connections between the support and the slidable member. The said pillars, pivot studs and guide stems are all secured to the back plate a or end of the support casing, being formed with circular or oval flanges for this purpose and having their extremities beyond the said flanges screwed into corresponding holes in the end plate of the casing; the guidin pillars m, which have to transmit the driving torque from the end plate a to the slidable member n, are preferably secured to the end plate a by screws passing through the apertured extremities of their oval flanges m of which the major axes lie in the direction of rotation, as seen in Figure 3.

The slidable member 12. is built up by bolting a conical disc n upon a circumferentially rebated plate n having apertures into I which the sockets 0 for the guiding pillars and also the thimbles for the connecting springs q are screwed against collars or flanges from the inner side of the plate; thus the projecting ends of the pillars m and their bushes 0 and of the guide stems q carrying the spring-adjusting nuts are covered and enclosed by the conical disc a during opera- 1 tion, as seen in Figure 2.

The plate n forming the inner portion of the slidable member may abut at its center against a pad 1' of leather or fabric held in a shell 1" inserted in the recessed head of the nut f securing the casing to the governor shaft b, so as to cushion the return movement of the slidable member n when drawn back by the springs g; the recessed head f of the nut,-

outside the cushioning pad, may be of hexag I onal or like external shape, the lower portion at this nut being cylindrical as mentioned above.

The plate n forming the inner portion of and around the governor casing a, the exterior of the latterbeing grooved circumferentially at a to receive one or more packing rings 8, made for example of absorbent material such as felt, which prevent the escape of oil from the interior and also serve to exclude dirt.

Oil may be supplied to the interior of the casing by means of holes t in the end or back plate a of the casing, these holes being surrounded by a gutter ring t which receives the oilthrown out'from the adjacent bearing of the governor shaft.

The governor levers or weights 7' are preferably pivoted at points lying near to and on the same pitch circle as the guiding pillars m, that is near to the periphery of the rotatable rings, so that the same slots 6 in the web of the latter will serve for the passage of both sets of parts, as already mentioned. The

proximately the same curvature as the interior of the rotatable ring, a toothed segmentj adapted to mesh with the central pinion d, a concave semi-circular surface 7' joining one end of the toothed segment to the first-mentioned semi-cylindrical surface 7' and a blunt nose 7' lying beyond the other end of the toothed segment, this nose being curved to clear the thimble g enclosing the spring connection which is adjacent to the guiding pillar m of the next group, as seen in Figure 1. Thus the weights are given free scope for their movements, while the guiding pillars and spring-thimbles are grouped beside the weight pivots, in the spaces between the pivot of one weight and the nose of the next, leaving ample room for the swinging movement of the weights without obstruction by the stationary pillars and springthimbles, but locating the latter parts in the spaces not required for the movement of the weights.

Vhat I claim is 1. A centrifugal governor, comprising, a rotary support, a ring mounted on said support and rotatable in relation thereto, a pinion mounted at the center of said ring, a plurality of weighted levers pivoted upon said support, each of said levers being formed with a toothed sector, said central pinion meshing with the toothed sectors of said levers, a plurality of parallel pillars mounted in said support, a slidable member to be operated by the governor, said slidable member being engaged upon said pillars, and cam and roller connections between said rotatable ring and said slidable member.

2. A centrifugal governor, comprising a rotary support, a ring mounted on said support and rotatable in relation thereto, a pinion mounted at the center of said ring, a plurality of weighted levers pivotedupon said support, each of said levers being formed with a toothed sector, said central pinion meshing with the toothed sectors of said levers, a plurality of parallel pillars mounted in said support, a slidable member. to be operated by the governor, a plurality of guide sockets upon said slidable member, said sockets being engaged upon said pillars, rollers mounted laterally upon said sockets, and 1 cam surfaces formed upon said rotatable ring to co-operate with said rollers.

3. A centrifugal governor, comprising a rotary support, a ring mounted on said support and rotatable in relation thereto, a pin pinion meshing with the toothed sectors of said levers, a plurality of parallel pillars mounted in said support, said pillars extending forwardthrough arcuate slotsin said annular plate, a slidable member engaged upon said pillars, and cam and roller connections between said rotatable ring and said slidable member.

4:. A centrifugal governor comprising a rotary driving shaft, a governor support mounted on said driving shaft,a cylindrical nut securing said support to said shaft, a pinion rotatable upon the exterior of said'nut, a rotatable annular plate and peripheral ring secured'to said pinion, a plurality of pivots extending forward from said'supp'ort,a plurality of weighted levers mounted upon said pivots, each of said levers beingintegral with a toothed sector meshing with said pinion, a plurality of parallel pillars extending forward from said support, a slidable member engaged upon said pillars, said annular plate being formed with slots for the passage of said pivots and pillars therethrough, and

cam and roller connections between said rotatable peripheral ring and said slidable member.

' 5. A centrifugal governor comprising a rotary driving shaft, a governor support mounted on said driving shaft, a cylindrical nut securing said support to said shaft, a pinion rotatable upon the exterior of'said nut, a rotatable annular plate and peripheral ring secured to said pinion, a plurality of pivots extending forward from said support, a plurality of weighted levers mounted upon said pivots, each of said levers being integral with a toothed sector meshing with said pinion, a plurality of parallel pillars extending forward from said support, a slidable member engaged uponsaid pillars, a plurality of spring connections between said support and said slidable member, said annular plate being formed with a plurality of arcuate slots for the passage of said pivots, said pillars and said springconnections therethrough,

said slidable member. s

6. A centrifugal governor, compris ng a rotary support, a ring mounted onsald support and rotatable in relation thereto, a cen-' tral pinion mounted on said ring, a plurality of weighted levers pivoted upon said support, a toothed sector providedupon each of said levers, said central pinion meshing 'with the toothedv sectors of said levers, a"

jection upon each of said sockets, a roller and cam and roller connections 1 between said rotatable peripheral ring and said sockets being engaged upon said pillars, a lateral pro- 'rotatable ring, said cam notches engaging with said rollers whereby the rotation of said ring by said weighted levers produces axial displacement of said slidable member.

7. A governor comprising a rotary driving shaft, a governor support mounted on said driving shaft, a cylindrical nut securing said support to said shaft, a pinion rotatable upon the exterior of said nut, a rotatable annu: lar plate and peripheral ring secured to said pinion, a plurality of pivots, extending forward from said support, a plurality of weighted levers mounted upon said pivots, each of said levers being integral with a toothed sector meshing with saidpinion, a plurality of parallel pillars extending for ward from said support, a slidable member engaged upon said pillars, a plurality of.

parallel studs mounted in said support, coiled springs encircling said studs, a plurality of spring thimbles mounted in said slidable member and forming abutments for the ends of said springs, adjusting means upon the outer ends of said studs forming abutments for the other ends of said springs, said annular plate being formed with a plurality of slots for the passage of said pivots, said pillars andsaid studs therethrough, and cam and roller connections between said peripheral ring and'said slidable member.

8. A governor comprising a rotary support, a ring mounted on said support and rotatable in relation thereto, a central pinion mounted on said ring, a plurality of weighted levers pivoted upon said support,

.100 a toothed sector provided upon each of said levers, said central pinion meshing with the toothed sectors of said levers, a plurality of parallel pillars mounted on said support, a slidable member to be operated by the governor, a plurality of guide sockets upon said slidable member, said sockets being engaged upon said pillars, a plurality of parallelstucls mounted n said support, coiled springs encircling said studs, a plurality of spring thimbles mounted in said slidable member and forming "abutments for the ends of said springs, adjusting means upon the outer ends of said studs other ends of said springs, said slidable member including'an apertured plate into which said sockets and thimbles are screwed and a conical disc covering the ends of said pillars and studs projecting through said apertured plate, and cam and roller connections between said rotatable ring and said slidable member.

forming abutments for the t In testimony whereof I have afiixed'myf signature.

JOHN noeenonnnrson.

mounted upon each of said projections,-and 

